Answer:
The atom
Explanation:
The basic unit of matter is the "atom." All matter consists of millions of atoms that within the atom contains electrons, protons, and neutrons. Knowing how many electrons, protons, and neutrons a atom has can determine the element which are substances that are on the periodic table.
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How many centers are required in a preschool classroom 4
The blood type of the person donating the kidney must be compatible with the recipients blood type
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